There's a merged pull request on the void-packages repository

bluez: support configs in service, adopt.
https://github.com/void-linux/void-packages/pull/31060

Description:
Passing options to bluetoothd can be necessary in some cases.

Also move INSTALL.msg to README.voidlinux, and note that elogind can be
enough, instead of requiring group membership.

@sgn you had asked me to adopt it, if that's still the case I can do it.

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